Method of making grids



Oct. 25, 1932. BEYER 1,884,535

METHOD OF MAKING GRIDS Filed May 7. 1951 Patented Oct. 25, 1932 UNITEDSTATES PATENT OFFICE HENRY L. BEYER, 02E NEWARK, NEWJERSEY METHOD OFMAKING GRIDS.

Application. filed May 7, 1931. Serial No. 535,719.

This invention relates to methods of makand then each tube is cut intoshorttubes having grids for electronic tubes such as used in ing thelengthdesired for the grid. radio apparatus and the like. Referring tothe drawing, in Figure 2 are An important element of an electronic tubeshown two sheets 5 and 6, of wire mesh which 5 is the grid, whichgenerally consists of a tube are simultaneously woven. The sheets are 56of wire mesh. Heretofore, each grid was united by weaving or'other meansalong the made individually by forming a small piece portions 7 whichare spaced as shown in of wire mesh into a cylinder and welding theFigure 1. The sheets are then cut alonglines edges together. 8, thusproducing a plurality of long flat- 10 But the method of securing theedges by tened'tubes which are then cut transversely w welding isobjectionable in that the welding along lines 9, to produce a pluralityof flatis unstable and the edges separate, rendering toned grids, whichare subsequently spread the grid unsatisfactory. Also, it is obviousOpen to the shape shown in Figure 3. that the welding method does notenable uni- It is clear that my method enables the rapid formity, andrequires considerable time. and easy production of grids in largequanti- It is therefore, an object of this invention ties, and as theportions 7 where thesheets to provide a method of easily and rapidly arewoven together maybe accurately spaced, making grids for electronictubes and the e g ClSWill be uniform. like. Also, the woven portions 7projecting from 20 A further object is the provision of a methh gri sShOWn in Fig re 3, will not be- 7 0d of making grids for electronictubes 11i come accidentally separated as frequently formly in largequantities. happens when the welding method is used.

A further object is the provision of a 9, the p i c s p e 7 P e P methodof making a grid which is stable Vement means for mountmgr the g m a andwill not separate when used in an electubeo t i t b It will thus beapparent that I have pro- These and other advantageous objects, dllced limproved a h Seme'being P which will later appear, are accomplished by Efi l'e'enforced Portlons e g the simple and practical construction andmg mbs tiles? re'eilforced POI-trons. or arrangement of partshereinafter described m l m ribs bemg F m by umtmg and exhibited in theaccompanying drawing, the fongmldmal edges f me Wlre t there forming phereof, and in which by imparting to the grid great stabil ty and,

Figure 1 represents a plan View of a pair 1n addition thereto, providmgconven1 ent,d1-

Of Superimposed Sheets of Wire mesh oper ainetrically opposed means formountmg the 5 ated u on in accordance with m invention grid an electromctube Figgre 2 re regents an end viewyof the mesh WVlnle I have describedthe sheets as being sheets Shown i Fi 1 woven together along theportions 7, 1t 1s obvi- F 3 t d f ous that they may be united by othersuitable lcure represen S an en 716W 0 gr 1d means without departingfrom the spirit of 40 made in accordance with my method. my i ti Flgui'e4 represents a P VleW of the a Also, my method is not limited to the manshown In lg ufacture of grids for electronic tubes, but is A0C01Cl1I1gt0 y method, Sheets of applicable to the making of wire mesh cylinwlremesh of the type used for grids, are sul f use i any it ti n,

45 perlmposed and WOVQ at in e t0 01111 The foregoing disclosure is tobe regarded 96 a plurality of long tubes, said lntervals being asdescriptive and illustrative only, and not equal to the width of a gridwhen flattened as restrictive or limitative of the invention, out. Thesheets are then out along the porof which obviously an embodiment may betions where they are woven together so that constructed including manymodifications 50 each long tube is separate from the other; withoutdeparting from the general scope herein indicated and denoted in theappended claims. 7

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. The method of making grids for electronic tubes and the like,comprising simultaneously weaving two sheets of wire mesh, weaving thesheets together at predetermined intervals, cutting the sheets along theportions where they are woven together to provide a plurality ofrelatively long tubes, then cutting the tubes into lengths desired forgrids, then spreading the tubes into substantially cylindrical shape.

2. The method of making grids for electronic devices, comprising weavingtwo sheets of wire mesh together at predetermined intervals, cutting thesheets along the woven portions, then cutting the sheets atpredetermined intervals transverse to the woven portions to provide aplurality of flattened tubes, then spreading the tubes.

. 3. The method of making grids for electronic devices, comprisinguniting two sheets of wire mesh along parallel spaced lines, cutting thesheets along the lines, and then cutting the sheets into desired lengthstransverse to the lines to provide a plurality of flattened w tubes,then spreading the tubes.

4. The method of making wire mesh tubes, comprising superimposing twosheets of wire mesh, uniting the sheets along spaced parallel lines,cutting the sheets through the united 35 portions, and then cutting thesheets transversely to the length desired for the wire mesh tube, thenspreading the tubes thus formed into substantially cylindrical shapes.

5. In a method of making grids for elec- 40 tronic tubes, the steps ofsimultaneously weaving two sheets of Wire mesh, at the same time weavingthe sheets together along spaced parallel lines.

. This specification signed this 1st day of 45 May, 1931.

HENRY L. BEYER.

